Copper phthalocyanine dyestuffs



United States Patent 3,535,333 COPPER PHTHALOCYANINE DYESTUFFS Kuhne Rudolf and Fritz Meiniuger, Frankfurt am Main,

Germany, and Rolf Wilhelm Pfirrmanu, Lucerne, Switzerland, assignors to Farbwerke Hoechst Aktiengesell- 3,535,333 Patented Oct. 20, 1970 on said benzenoid rings are defined as above, with ammonia, primary or secondary aliphatic amines and treating the amines thus obtained in known manner, if desired, with alkylating agents or inorganic acids or (b) Dyestuffs of the general Formula 3 with tertiary schaft vormals Meister Lucius & Bruning, Frankfurt 5 aliphatic amines. Na%Main, a (cjor giratitou or Gerlmarfiy 6 S N As starting dyestuffs of the general Formulae 3 and 4 0 lawlllg- 011 llllaloll-lll-pa 0 P1 ca 011 there ma be used co er hthaloc anine d estuffs which 666,532, July 27, 1967. This application Sept. 10, 1969, contain gioups of fi fi y y Ser. No. 856,834 Claims priority, appliiii itganggermany, Oct. 3, 1962, 10 R1 Int. (:1. 0691; 47/04 US. Cl. 260-3145 6 Claims 1'11 ABSTRACT OF THE DISCLOSURE The invention is concerned with amino dyestuffs deriva- R1 and X being d fi d as more above, tives of phthalocyanine sulfonamide dyestuifs and their Copper phthalocyanine d t ff used as Starting quaternary Saltspounds in the process of the present invention having the Formula 3 can be prepared by condensing copper phthalo This application is a continuation in part application of eyallifle dyestuffs Containing 3 of foul" sulfonyl halogen our copending application Ser. No. 666,532 filed July 27, g p p l of reacting With N-ethionylaminophenyl- 1967, now abandoned, which in turn is a divisional apamines or N-isoethionylaminophenylamines and esterifyplication of US. Pat. 3,354,182, filed Oct. 2, 1962. ing the y y groups of e fiy yy The present invention relates to novel copper phthaloacid radicals in the dyestuffs containing iso-ethionylamino cyanine dyestuffs and to a process for preparing them; groups with a hydrochloric acid or sulfuric acid. The startespecially it relates to copper phthalocyanine dyestuifs of g compounds of the Formula 3 in which X represents the general formula a halogen atom, especially a chlorine atom, can be prepared by reacting corresponding ,B-hydroxyethyl-sulfonyl- I: CuPc SOz-NH-Q R2 amino groups containing dyestuffs with halogen-yielding agents as, for example, thionyl chloride. Starting com- I pounds of the Formula 4 can be prepared by treating a m starting compound of Formula 3 wherein X represents (1) F --OSO H, with an alkaline agent, such as sodium hydroxor 30 ide. [3 3851I1IP;;-]ESO2NH R2 I. N-SO2-CH2CH2NR3 xm 1 11 \R4 in (2) in which CuPc is a copper phthalocyanine moiety, R R Primary or secondary amines suitable for the reaction R and R are hydrogen, methyl or ethyl, X is a chlowith compounds of the general Formula 3 or 4 are, for rine anion, H50 80 /2, C H OSO or example, ammonia, methylamine, dimethylamine and diethylamine.

CH3 0 SO3 The reaction of compounds of the general Formulae 3 and m is 3 0! 4, the sulfonamide substituent being linked and 4 with ammonia primary or secondary amines can be, in metal- Para-Position the eafbefl atom of the carried out within a large temperature range, namely at zenoid ring of the Po nucleus and at most one sulfonamide about 20 to 150 C o one h d however, h o tisubstituent being linked to a 'bel'lzenoid ring of the PC mum temperature to be used in each individual case demleleuspends to a large extent upon the compound of the For- It has been found that novel pp Pbtbaloeyanine y mulae 3 and 4 used, the reaction conditions being particu- Stuffs of the general Formula 1 2 described above C311 larly influenced by the substituents R and the acid radical e P P y feaetlng in an aqueous 801113011 P X, and on the other hand upon the amine used. Thus, when using aliphatic bases, the most favorable temperature Organic dyestuffs 0f the general formula range is often between about 40 and 80 C. When using I higher temperatures, it is in some cases advantageous- 5 ,2 3. Q with regard to the volability of the compounds used-to N-SOzCHz-CHz-X operate with an autoclave. The reaction of compounds of l m the general Formulae 3 and 4 with the amines mentioned (3) can be carried out in an aqueous solution or an aqueous suspension, in the last case, if desired, with the addition or of a dispersing agent, while stirring and kneading, in order I I to obtain a homogeneity of the reaction mixture favorable OuPc-SO2NH [3.3'.a".(3"')J Q for the reactron. The reaction components can also be re- 1]ISO2''OH=CH2 acted in other indifferent solvents as, for example, dioxane,

R1 111 tetrahydrofurane, dimethylformamide or benzene.

(4) The dyestuffs of the general Formula 1 obtained as in which CuPc, R X m and the positions of the suldescribed above by reacting eemPounds 0f The general fonamide substituent on the benzenoid ring of the Pc nucleus and the number of the sulfonamide substituents Formula 3 or 4 with the primary or secondary amines mentioned above may be used for dyeing per se or, if

desired, reacted in known manner either with alkylating agents, for example, alkyl halides such as methyl iodide, or dialkyl sulfates such as dimethyl sulfate, or with p-toluene-sulfonic acid alkylesters, or with inorganic acids as, for example, hydrochloric acid, hydrobromic acid or sulfuric acid to form the corresponding ammonium compounds of the general Formula 2. For this purpose the dyestuffs of the general Formula 1 are allowed to react in an aqueous suspension or solution or dissolved in a sufficiently indifferent solvent as, for example, benzene, acetic acid ethylester, with the alkylating agent or the acid at temperatures ranging between about 10 and 100 C., preferably between about 20 and 40 C.

When reacting dyestuffs of the general Formula 3 with a tertiary aliphatic amine as, for example, trimethylamine there are obtained directly ammonium compounds of the general Formula 2. The reaction conditions are the same as those of the reaction with primary or secondary amines described above.

The novel dyestuffs obtained by the process of the present invention may be used for dyeing natural and synthetic textile materials as, for example, of cotton, viscose, regenerated cellulose, wool, silk, fibres of cellulose acetate, polyamide and polyacrylonitrile. There are obtained fast intense dyeings which are distinguished, above all, by a very good fastness to wet processing.

Such dyestulfs are applied to the fiber according to the usual dyeing, padding and printing processes and, if desired, after-treated with an acid-binding agent at room or elevated temperature. Such cationic dyestuffs are also suitable for dyeing wool and particularly suitable for dyeing synthetic fibres as, for example, of acetic rayon, polyamides and polyacrylo-nitrile.

The dyestuffs of the Formulae 3 and 4 used as starting material in the present process are inferior to the dyestuffs obtained by the process of the present invention regarding their affinity to the fiber. Owing to their cationic properties they have the advantage of migrating only to a small extent, when drying the dyed material, thus evener dyeings into which the dyestulf has better penetrated being obtained. Finally, the dyestuffs may be used in the form of fast solutions due to their solubility in water, whereas, for example, the dyestuffs applied for dyeing acetate silk have to be used in an aqueous suspension.

The following examples serve to illustrate the invention, but they are not intended to limit it thereto, the parts and percentages being by weight unless otherwise stated and the relationship of parts by weight to parts by volume being the same as that of the kilogram to the liter.

4 EXAMPLE 1 176 parts of the copper-phthalocyanine dyestutf of the formula CH3 CH3 15 parts of this dyestulf are dissolved in 100 parts of dimethyl formamide while heating. After having cooled the solution 76 parts of dimethyl sulfate are slowly added dropwise, while stirring. After stirring for 3 hours 400 parts of alcohol are added. The separated dyestuff is filtered off and dried in vacuo. It has the formula C H: CH

16 parts of a greenish blue powder are obtained which dissolves in water to give a blue-green solution and dyes cotton turquoise-blue shades according to the pad-steaming process.

The starting compound used for preparing this dyestutf can be produced, for example in the following manner:

44 parts of copper-phthalocyanine-3.3'.3-trisulfochloride are introduced slowly at about 15 C. to 20 C., while stirring, into a solution of 104 parts of 4-amino- N-fi-hydroxy-ethyl-sulfonyl-N-methyl-aminobenzene in 80 parts of dimethyl formamide and 46 parts of methanol. The whole is then after-stirred for 24 hours and the separated dyestutf is filtered off. The dyestuff is then washed with 2000 parts of hot water and dried in vacuo. 73 parts of the dyestuff of the formula Example I: CuPJSOz-NH-Q turquoise-blue We claim: t 2. The compound of the formula 1. A compound of the formula 3. The compound of the formula CH3 CH3 4 4. The compound of the formula 5. The compound of the formula R or-Nee NSO2CH2CH2NCH3 401 CH3 H 4 wherein CuPc is a copper phthalocyanine moiety, R R References Cited R and R are hydrogen, methyl or ethyl, X is a chlorine UNITED STATES PATENTS anion, H804, 804/2, 2 5 3 or 3 3 3,320,275 1967 Dien et a1. 260--314.5

and m is 3 or 4, the sulfonamide substituent being linked in the metaor para-position to a carbon atom of the HENRY JILES Pnmary Exammer benzenoid ring of the Po nucleus and at most one sulfon- MONTZ Assistant Examiner amide substituent being linked to a benzenoid ring of the 45 CL Pc nucleus. 8-54.2, 162 

